Biodegradable resin composition

Inactive Publication Date: 2007-02-22
ELECSYS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0014] Also, it is another object of the invention to provide a biodegradable resin composition which can lower the manufacturing costs of the biodegradable resin composition to be produced and prevent environmental contamination in advance by reusing a cause factor inducing environmental contamination and a biodegradable molding using the same.
[001

Problems solved by technology

As plastics are light and strong and they are easy to be processed and not easily degraded, their consumption from industrial materials to disposable products and wrapping materials is continuously increasing.
However, the disposal of wastes by landfill, incineration, etc. gives rise to environmentally severe damage.
However, as the starch is added, a plasticizer is to be added, which causes discoloring and bad fume during processing and the properties of the plastics are remarkably deteriorated.
However, the ethylene-acrylic acid copolymers are expensive and the properties of the produced films are extremely fragile for practical use, and their biodegradability is not good.
However, unreacted coarse monomers are likely to remain, and in the case that the content of the starch is more than 30%, mechanical properties are

Method used

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  • Biodegradable resin composition
  • Biodegradable resin composition

Examples

Experimental program
Comparison scheme
Effect test

Example

Example 1

[0045] After 70 parts by weight of cellulose diacetate having a molecular weight of 202,332 (Eastman Co., Ltd.), and 30 parts by weight of triacetin (Mw. 218.21, major component C9H14O6), Dae Shin Chemical Ind. Co., Ltd.) as a plasticizer were evenly mixed, the mixture was kneaded for 3 hours at the temperature of 100° C. and melted in Haake rheocord system of 200° C. thereby to prepare a blending mixture.

Example

Examples 2 to 8 and Comparative Examples 1 to 6

[0046] With the exception that the compositions and ratios as shown in Table 1 below were used, blending mixtures were prepared by carrying out the same method as above Example 1. TABLE 1Cellulose(Parts byPlasticizerWeight)TATECGCESOBETEX. 1CDA1 7030EX. 2CDA1 8020EX. 3CDA1 8020EX. 4CDA1 8020EX. 5CDA1 801010EX. 6CDA2 8020EX. 7CDA2 702010EX. 8CDA3 8020EX. 9CDA3 7030COM. EX. 1CA 9010COM. EX. 2CA 8020COM. EX. 3CA 7030COM. EX. 4pure PPCOM. EX. 5pure PLA

Note

CDA1: Cellulose (Di)Acetate(Mn ca. 202,332 g · mol−1, 54.5 wt. % acetyl content, Tg 188° C., Eastman Co., Ltd)

CDA2: Recycling fabric CDA (SK)

CDA3: Recycling fiber CDA (SK)

CA: Cellulose acetate(Mn ca. 50,000 g · mol−1, 39.7 wt. % acetyl content, Tg 188° C., Aldrich Co., Ltd.)

PP: Polypropylene (grade H1500, Hyundai)

PLA: Polylacetic acid (Mn 83,000 g · mol−1 , Mw 153000 g · mol−1 Cargill-Dow Co., Ltd.)

TA: Triacetin(Mw. 218.21), Dae Shin Chemical Ind. Co., Ltd.

TEC: Triethyl citrate(M...

Example

[0052]FIG. 1 showed the biodegradability of Example 2 of the invention and cellulose which is a standard material over time and FIG. 2 showed the biodegradability of Comparative Example 5 and the cellulose which is a standard material over time.

[0053] As shown in FIG. 1 and FIG. 2, the biodegradable resin composition of the invention showed biodegradability almost equal to that of Comparative Example 5 wherein the commonly used biodegradable resin composition was used.

[0054] The biodegradable resin composition in accordance with the invention can remarkably lower the manufacturing costs when compared with the cellulose acetate which has been used as biodegradable plastic materials, can prevent environmental contamination by reusing the cause factor of environmental contamination, remarkably improves the properties, is easy to be prepared into moldings at a low temperature due to its low melting point, and has considerably improved properties when compared with prior biodegradable ...

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Abstract

This invention provides a biodegradable resin composition and a biodegradable molding using the same and in particular, it not only have satisfactory biodegradability, processability and properties required for biodegradable resins by comprising cellulose diacetate as a main component but also can lower manufacturing costs and prevent environmental contamination by preparing the biodegradable resins by reusing a cause factor of environmental contamination.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a biodegradable resin composition and a biodegradable molding using the same and more particularly, it relates to a biodegradable resin composition comprising cellulose diacetate as a main component, which can not only satisfy the biodegradability, processability and properties required for a biodegradable resin but also lower manufacturing costs and prevent environmental contamination by producing the biodegradable resin by reusing a cause factor of environmental contamination and a biodegradable molding using the same. [0003] 2. Description of Related Art [0004] As plastics are light and strong and they are easy to be processed and not easily degraded, their consumption from industrial materials to disposable products and wrapping materials is continuously increasing. Hard wastes including such plastics are disposed by landfill or incineration after their use, or reused by recyclin...

Claims

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Application Information

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IPC IPC(8): D21H19/54
CPCC08K5/053C08K5/103C08K5/11C08L1/12C08L97/02C08L101/16C08L2201/06C08L2666/26C08K5/0016B29C45/0001
Inventor YI, YOUNG-KWANLEE, SANG-HWAN
Owner ELECSYS
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